CLAS 12 First Experiment Workshop Report Latifa Elouadrhiri

CLAS 12 First Experiment Workshop Report Latifa Elouadrhiri Jefferson Lab For more details about the workshop https: //www. jlab. org/indico/event/222/ CLAS Collaboration Jefferson Lab June 14, 2017 1 CLAS Collaboration

Outline • KPP – Data Calibration/Analysis Status and Plans • Engineering Run Configuration • Hardware Status • DAQ, Electronics and Trigger: CLAS 12 Commissioning with Cosmics • Online & Monitoring • Slow Control • Offline: Simulation, Event Reconstruction & Calibration ( See Talks by Veronique and Raffaella) • Path Forward to Physics June 14, 2017 2 CLAS Collaboration

KPP – Data Calibration/Analysis Status KPP – Run Period Feb. 3 – Feb. 6, 2017. Data taking with the full detector readout: SVT, CTOF, 1 sector DC, 6 sectors FTOF & ECAL Calibration still in Progress to be completed in August (see Raffaella’s talk) KPP data processing (https: //clasweb. jlab. org/wiki/index. php/CLAS 12_KPP) June 14, 2017 3 CLAS Collaboration

KPP – Analysis Note in Preparation Our Goal for the Engineering Run is to Perform quasi-online calibration Work will be done with Calcom and Ken Hicks (ACE) October 6 -7, 2015 4 SC OPA Review of 12 Ge. V

CLAS 12 Equipment Hall B Forward Detector (FD) - TORUS magnet HT Cherenkov Counter Drift chamber system LT Cherenkov Counter Forward To. F System Pre-shower calorimeter E. M. calorimeter Forward Tagger RICH detector Central Detector (CD) - Solenoid magnet Silicon Vertex Tracker Central Time-of-Flight Central Neutron Det. Micro. Megas MM CND FT Beamline - Photon Tagger Shielding Cryo Target Moller polarimeter Polarized Targets RICH Total # of channels: 111832 June 14, 2017 5 5 CLAS Collaboration

Detector System • All baseline equipment commissioned with beam, repairs of the PCAL/EC scheduled this summer once the solenoid is installed • DC gas system completed and commissioning all six sectors including trigger is underway • Micromegas and SVT integration completed and commissioning is underway • FT Ready for installation in July • RICH being assembled at JLab and installation planned in September. June 14, 2017 6 CLAS Collaboration

Target and Moller Polarimeter • Target: • Design completed all parts in hand • Pressure system analysis complete • Assembly scheduled in July • Installation scheduled in August • Moller Polarimeter • Measurement of target polarization completed • Data analysis in progress • Still to be done: • Prepare target for beam • Work with helicity signals as well as exercising the whole software October 6 -7, 2015 7 SC OPA Review of 12 Ge. V

CLAS 12 DAQ/Trigger • Electronics installed (and was used for KPP): ECAL, PCAL, FTOF, LTCC, DC, HTCC, CTOF, SVT • Online computer cluster is 100% complete and operational • Networking is 100% complete and operational • DAQ software is operational • Need to add scalers for Faraday Cup, helicity etc • Trigger simulations and algorithm developed, cluster finding for PCAL, improved energy correction for both ECAL and PCAL (underway), HTCC, DC segment finder, DC road finder implemented • Trigger simulation studies for both CLAS 12 and FT triggers are underway. October 6 -7, 2015 8 SC OPA Review of 12 Ge. V

Online • Computing hardware is available for most online tasks (runtime databases, messaging system, communication with EPICS etc) • There is no designated ‘online farm’ for data processing in real time, two hot-swap DAQ servers can be used as temporary solution • Some work still needed for process monitoring and control, CLAS event display, data collection from different sources (DAQ, EPICS, scalers etc) • Runtime database (transformation to RCDB) • Slow control excellent progress on track for the engineering run June 14, 2017 9 CLAS Collaboration

CLAS 12 FD Full Chain Commissioning • Goals: – – – – • check all drift chamber channels in 6 sectors fix bad channels, connectors measure DC efficiencies in all regions and sectors with tracks, determine DC HV & thresholds DC alignments with straight tracks (Torus field OFF) Fix all bad channels in PCAL/EC & FTOF calibration (no RF available) EC/PCAL Calibration calibration documentation for team training Detector Configuration in place ü All EC + PCAL operational in 6 sectors ü FTOF 1 a, 1 b operational in 6 sectors ü DC R 1, R 2, R 3 operational in 6 sectors (Noise in DC R 2 being fixed) • DAQ & Trigger ü ü ü Trigger-1: Pixel trigger in EC all 6 sectors Trigger-2: Cluster trigger in EC all 6 sectors Trigger-3: DC R 3 - Segment Track Trigger-4: DC R 1 -R 2 -R 3 full track DAQ readout, all sectors, all channels June 14, 2017 10 CLAS Collaboration

DC Noise Work Turbo pump was moved (was already planned work luckily) Dramatic improvement on noise see next slide for noise rates before & after R 2 DCRB modules were modified to improve power supply noise return path (from B. Raydo) Dramatic improvement on noise see next slides for noise rates before & after Currently can run at -45 m. V thresholds for R 2 (lower for R 1 & R 3) R 1 & R 3 DCRB modules are planned for modified in June Since R 1 & R 3 DCRB contribute noise to R 2 we expect a noticeable noise improvement on R 2 after all DCRB modification complete See final slides which shows expected R 2 noise when all DCRB modification complete (R 1 and R 3 crates were off for this measurement June 14, 2017 11 CLAS Collaboration

DC-R 2 Noise Before Improvement September 2014 12

Expected DC-R 2 Noise After Improvement September 2014 13

Preparations for Fall Runs § Complete KPP data calibration § Cosmic ray test with full complement of forward detectors § Checkout all 18 drift chambers (all 6 sectors) for noise levels § Measure tracking efficiencies for minimum ionizing particles § Test special triggers for engineering run and physics runs § Calorimeter pixel triggers for cosmic ray calibration of calorimeters and 6/5 superlayer reconstruction § Tracking triggers in DCs (DCRB) and hits in FTOF, PCAL and EC § Train reconstruction software on real events in all 6 sectors and 3 regions §Plan on internal “Ready for Science” review in September § Status of all detectors, calibrations, reconstruction, particle ID, … § Full event reconstruction in FD and CD and correlations § Acceptances for several reactions, impact of background occupancies § “Online” calibration procedures § Documentation § Identified lead teams 12/14/2021 14 14

Analysis Committee of Experts (ACE) • ACE members: K. Hicks (chair), D. Ireland, K. Joo, S. Kuhn, S. Niccolai, E. Pasyuk, L. Weinstein • Goals of the committee as defined by CLAS chair, (Formed on the recommendation of the common tools committee) – – – Guide the development of analysis algorithms (after calibrations) PID, momentum corrections, backgrounds, fiducial cuts, etc. Higher level analysis: kinematic fitting, PWA (if applicable) Standardize the algorithms and software Etc. Draft Report of the ACE Committee completed: the document outlines the recommended procedures for data analysis from the CLAS 12 detector. Will work in collaborative effort with Software Clacom and ACE to prepare for the September science review June 14, 2017 15 CLAS Collaboration

Timeline FD & Trigger commissioning in progress Full Chain test With cosmics TASK 2016 Oct. Nov. 2017 Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept Oct. Nov. Dec. SIMULATION RECONSTRUCTION New release with full central detector CALIBRATION Ready for KPP Hall B Science review Ready for Physics EXP. SCHEDULE KPP Run Second Calibration Challenge First Calibration Challenge June 14, 2017 Engineering Run 16 CLAS Collaboration

Looking forward to successful engineering run and the start of physics with CLAS 12! Mailing list clas 12_first_exp & biweekly meeting, Wednesdays at 8: 30 June 14, 2017 17 CLAS Collaboration